Tubular writing pen tip with adjustment means

Abstract

An improved tubular writing pen having a writing pen body (3) and a forepart (1) joined to it that holds in a forward direction a writing tube (5). The forepart (1) is revolvable, yet is installed axially non-dislocatably in the pen body (3) and in the latter is braced against dislocatability in a rearward direction by a support surface (14). A writing fluid conductor extends into the writing tube (5). A coupler element (7) is fastened to the writing conductor and stands in contact with a bearing surface of an adjuster element (4) when raised from the drawing surface, and which is screwed into the forepart (1) and held non-rotatable with respect to the forepart.

I claim: 
     
       1. In a tubular writing pen having a writing fluid reservoir (2); a writing pen body (3;3";32;32') a forepart (1;1';31;31') that holds at its front a writing tube (5;5';35,35') into which a writing fluid conductor (6; 6';36;36') extends, so as to project forwardly for contact by a forward end with a drawing surface, and rearwardly for contact by a rearward end with said reservoir of writing fluid, the improvement which comprises, in combination said writing fluid conductor being fastened to a coupler element (7;7';7";37;37") so that, when the writing tube is raised from the drawing surface, the coupler element makes contact with a bearing surface of an adjuster element (4;4';34;34') that is axially movable with respect to the forepart (1;1';31;31') by means of a threaded engagement with said pen body, a forepart (1;1';31;31') that is mounted from the front end into an axially fixed position with respect to the writing pen body (3;3';32;32') wherein the forepart is braced against further axial movement toward the rear by a writing pen body bearing surface (14;14') wherein further said adjuster element (4;4'; 43;34') is not rotatable with respect to the writing fluid reservoir (2) but is axially positioned selectively with respect to the writing pen body (3;3";32;32') by a rotation of the forepart (1;1';32;31') which is rotatable but is axially fixed with respect to said writing fluid reservoir. 
     
     
       2. A tubular writing pen tip according to claim 1, wherein the writing pen body further comprises a socket element (3;3') connected for rotation but axially fixed with respect to a surface of a writing fluid reservoir (2;2') wherein further the adjuster element (4;4') stands in nondislocatable engagement with a wall portion of the writing fluid reservoir (16;16'). 
     
     
       3. A tubular writing pen tip according to claim 2, wherein the wall portion (16;16') is formed by a reduction in cross-section. 
     
     
       4. A tubular writing pen tip according to claim 3, wherein the wall portion (16;16') further comprises axially parallel running slots into which extend axially parallel running fins (21;21;) of the adjuster element (4;4') to prevent rotation between the adjuster element and the writing pen body. 
     
     
       5. A tubular writing pen tip according to claim 2, wherein the socket element (3;3') is connected with a surface of the writing fluid reservoir (2) to define a snap-on connection which comprises a ring (15) and a snap ring groove, and is braced against an annular shoulder (25) at a surface which is proximate a forward end of the writing fluid reservoir (2). 
     
     
       6. A tubular writing pen tip according to claim 2 wherein a forward facing bearing surface of said coupler element (7;7';7") makes contact with a rearward facing bearing surface of the adjuster element (4;4') and by means of a spring force the coupler element normally is pressed against the bearing surface. 
     
     
       7. A tubular writing pen tip according to claim 2, wherein the coupler element comprises a falling weight body and the writing fluid conductor comprises a cleaning wire (7';7"). 
     
     
       8. A tubular writing pen tip according to claim 1, wherein the writing pen body (32;32') comprises a writing fluid reservoir, and the adjuster element (34;34') is in an axially movable but non-rotatable engagement with a wall portion (56;56') of the writing fluid reservoir (32;32'). 
     
     
       9. A tubular writing pen tip according to claim 8, wherein the reservoir wall portion (56;56') is formed by a reduced cross section. 
     
     
       10. A tubular writing pen tip according to claim 9, wherein axially parallel running slots are provided in the reduced cross section reservoir wall portion (56;56') into which extend axially parallel fins (51;51') of the adjuster element (34;34'). 
     
     
       11. A tubular writing pen tip according to claim 8, wherein the forepart (31;31') and the writing pen body (32;32') are coupled by means of a slotted spring ring (45;45') and the forepart (31) is braced against axial movement at a forward end of the writing pen body (32) through an annular shoulder (39). 
     
     
       12. A tubular writing pen tip according to claim 8 wherein a forward facing surface of said coupler element (37') makes contact with a rearward facing surface of the adjuster element (34') and the coupler element (37') normally is pressed against the bearing surface by means of spring force. 
     
     
       13. A tubular writing pen tip according to claim 8 wherein the writing fluid conductor (36) rearward end is retained axially by means of friction within the writing fluid reservoir, and the bearing surface for contact with the coupler element (37) faces forwardly toward the writing tube (35). 
     
     
       14. A tubular writing pen tip according to claim 8 wherein a catch spring fastener (60') is provided between forepart (31') and writing pen body (32'), wherein a catch spring free end comes into contact with notched recesses (62') around a circumference of said forepart.